import NP from 'number-precision'; import {glob, read, write} from './util.js'; NP.enableBoundaryChecking(false); const themeMixins = {}; const coreMixins = {}; const themeVar = {}; const coreVar = {}; /* template for the new components/mixins.scss file*/ const mixinTemplate = `// // Component: Mixin // Description: Defines mixins which are used across all components // // ======================================================================== // SVG // ======================================================================== /// Replace \`$search\` with \`$replace\` in \`$string\` /// @author Hugo Giraudel /// @param {String} $string - Initial string /// @param {String} $search - Substring to replace /// @param {String} $replace ('') - New value /// @return {String} - Updated string @function str-replace($string, $search, $replace: '') { $index: str-index($string, $search); @if $index { @return str-slice($string, 1, $index - 1) + $replace + str-replace(str-slice($string, $index + str-length($search)), $search, $replace); } @return $string; } @mixin svg-fill($src, $color-default, $color-new){ $replace-src: str-replace($src, $color-default, $color-new) !default; $replace-src: str-replace($replace-src, "#", "%23"); background-image: url(quote($replace-src)); }`; /* template for the inverse components */ const inverseTemplate = ` @include hook-inverse-component-base(); @include hook-inverse-component-link(); @include hook-inverse-component-heading(); @include hook-inverse-component-divider(); @include hook-inverse-component-list(); @include hook-inverse-component-icon(); @include hook-inverse-component-form(); @include hook-inverse-component-button(); @include hook-inverse-component-grid(); @include hook-inverse-component-close(); @include hook-inverse-component-totop(); @include hook-inverse-component-badge(); @include hook-inverse-component-label(); @include hook-inverse-component-article(); @include hook-inverse-component-search(); @include hook-inverse-component-nav(); @include hook-inverse-component-navbar(); @include hook-inverse-component-subnav(); @include hook-inverse-component-breadcrumb(); @include hook-inverse-component-pagination(); @include hook-inverse-component-tab(); @include hook-inverse-component-slidenav(); @include hook-inverse-component-dotnav(); @include hook-inverse-component-accordion(); @include hook-inverse-component-iconnav(); @include hook-inverse-component-text(); @include hook-inverse-component-column(); @include hook-inverse-component-utility();`; /* First Step: Go through all files */ for (const file of await glob('src/less/**/*.less')) { const data = await read(file); /* replace all Less stuff with SCSS */ let scssData = data.replace(/\/less\//g, '/scss/') // change less/ dir to scss/ on imports .replace(/\.less/g, '.scss') // change .less extensions to .scss on imports .replace(/@/g, '$') // convert variables .replace(/(:[^'"]*?\([^'"]+?)\s*\/\s*([0-9.-]+)\)/g, (exp, m1, m2) => `${m1} * ${NP.round(1 / parseFloat(m2), 5)})`) .replace(/--uk-[^\s]+: (\$[^\s]+);/g, (exp, name) => exp.replace(name, `#{${name}}`)) .replace(/\\\$/g, '\\@') // revert classes using the @ symbol .replace(/ e\(/g, ' unquote(') // convert escape function .replace(/\.([\w-]*)\s*\((.*)\)\s*{/g, '@mixin $1($2){') // hook -> mixins .replace(/(\$[\w-]*)\s*:(.*);/g, '$1: $2 !default;') // make variables optional .replace(/@mixin ([\w-]*)\s*\((.*)\)\s*{\s*}/g, '// @mixin $1($2){}') // comment empty mixins .replace(/\.(hook[a-zA-Z\-\d]+)(\(\))?;/g, '@if(mixin-exists($1)) {@include $1();}') // hook calls surrounded by a mixin-exists .replace(/\$(import|supports|media|font-face|page|-ms-viewport|keyframes|-webkit-keyframes|-moz-document)/g, '@$1') // replace valid '@' statements .replace(/tint\((\$[\w-]+),\s([^)]*)\)/g, 'mix(white, $1, $2)') // replace Less function tint with mix .replace(/fade\((\$[\w-]*), ([0-9]+)%\)/g, (match, p1, p2) => { return `rgba(${p1}, ${p2 / 100})`;}) // replace Less function fade with rgba .replace(/fadeout\((\$[\w-]*), ([0-9]+)%\)/g, (match, p1, p2) => { return `fade-out(${p1}, ${p2 / 100})`;}) // replace Less function fadeout with fade-out .replace(/\.svg-fill/g, '@include svg-fill') // include svg-fill mixin .replace(/(.*):extend\((\.[\w-\\@]*) all\) when \((\$[\w-]*) = ([\w]+)\) {}/g, '@if ( $3 == $4 ) { $1 { @extend $2 !optional;} }') // update conditional extend and add !optional to ignore warnings .replace(/(\.[\w-\\@]+)\s*when\s*\((\$[\w-]*)\s*=\s*(\w+)\)\s*{\s*@if\(mixin-exists\(([\w-]*)\)\) {@include\s([\w-]*)\(\);\s*}\s*}/g, '@if ($2 == $3) { $1 { @if (mixin-exists($4)) {@include $4();}}}') // update conditional hook .replace(/(\.[\w-\\@]+)\s*when\s*\((\$[\w-]*)\s*=\s*(\w+)\)\s*({\s*.*?\s*})/gs, '@if ($2 == $3) {\n$1 $4\n}') // replace conditionals .replace(/\${/g, '#{$') // string literals: from: /~"(.*)"/g, to: '#{"$1"}' .replace(/[^(](-\$[\w-]*)/g, ' ($1)') // surround negative variables with brackets .replace(/(--[\w-]+:\s*)~'([^']+)'/g, '$1$2') // string literals in custom properties .replace(/~('[^']+')/g, 'unquote($1)'); // string literals: for real /* File name of the current file */ const [filename] = file.split('/').pop().split('.less'); if (filename !== 'inverse') { scssData = scssData.replace(/hook-inverse(?!-)/g, `hook-inverse-component-${filename}`); } else { const joinedHook = `@mixin hook-inverse(){\n${inverseTemplate}\n}\n`; scssData = scssData.replace(/\*\//, '*/\n' + joinedHook); } /* get all the mixins and remove them from the file */ scssData = getMixinsFromFile(file, scssData); /* get all Variables but not from the mixin.less file */ if (filename !== 'mixin') { scssData = await getVariablesFromFile(file, scssData); } if (filename === 'uikit.theme') { /* remove the theme import first place */ scssData = scssData.replace(/\/\/\n\/\/ Theme\n\/\/\n\n@import "theme\/_import.scss";/, ''); /* add uikit-mixins and uikit-variables include to the uikit.scss file and change order, to load theme files first */ scssData = scssData.replace(/\/\/ Core\n\/\//g, '// Theme\n//\n\n@import "theme/_import.scss";'); } /* mixin.less needs to be fully replaced by the new mixin file*/ if (filename === 'mixin') { scssData = mixinTemplate; } await write(file.replace(/less/g, 'scss').replace('.theme.', '-theme.'), scssData); } /* Second Step write all new needed files for SASS */ /* write mixins into new file */ const mixins_theme = Object.keys(themeMixins).map(function (key) { return themeMixins[key]; }); await write('src/scss/mixins-theme.scss', mixins_theme.join('\n')); const mixins_core = Object.keys(coreMixins).map(function (key) { return coreMixins[key]; }); await write('src/scss/mixins.scss', mixins_core.join('\n')); /* write core variables */ const compactCoreVar = new Set(); Object.keys(coreVar).map(key => getAllDependencies(coreVar, key).forEach(dependency => compactCoreVar.add(dependency))); await write('src/scss/variables.scss', Array.from(compactCoreVar).join('\n')); /* write theme variables */ const compactThemeVar = new Set(); Object.keys(themeVar).map(key => getAllDependencies(themeVar, key).forEach(dependency => compactThemeVar.add(dependency))); await write('src/scss/variables-theme.scss', Array.from(compactThemeVar).join('\n')); /* * recursive function to get a dependencie Set which is ordered so that no depencies exist to a later on entry * @return Set with all the dependencies. */ function getAllDependencies(allVariables, currentKey, dependencies = new Set()) { if (!allVariables[currentKey].dependencies.length) { dependencies.add(`${currentKey}: ${allVariables[currentKey].value}`); return Array.from(dependencies); } else { allVariables[currentKey].dependencies.forEach(dependecy => { getAllDependencies(allVariables, dependecy, dependencies).forEach(newDependency => dependencies.add(newDependency)); }); dependencies.add(`${currentKey}: ${allVariables[currentKey].value}`); return Array.from(dependencies); } } /* * function to extract all the mixins from a given file with its data. * @return an updated data where the mixins have been removed. */ function getMixinsFromFile(file, data) { /* Step 1: get all includes and insert them, so that at least empty mixins exist. */ let regex = /@include ([a-z0-9-]+)/g; let match = regex.exec(data); while (match) { if (!(match[1] in themeMixins)) { themeMixins[match[1]] = `@mixin ${match[1]}(){}`; } if (!(match[1] in coreMixins)) { coreMixins[match[1]] = `@mixin ${match[1]}(){}`; } match = regex.exec(data); } /* Step 2: get all multiline mixins */ regex = /@mixin ([\w-]*)\s*\((.*)\)\s*{\n(\s+[\w\W]+?)(?=\n})\n}/g; match = regex.exec(data); while (match) { [themeMixins[match[1]]] = match; if (file.indexOf('theme/') < 0) { [coreMixins[match[1]]] = match; } match = regex.exec(data); } /* Step 3: get all singleline mixins */ regex = /@mixin ([\w-]*)\s*\((.*)\)\s*{( [^\n]+)}/g; match = regex.exec(data); while (match) { [themeMixins[match[1]]] = match; if (file.indexOf('theme/') < 0) { [coreMixins[match[1]]] = match; } match = regex.exec(data); } /* Step 4: remove the mixins from the file, so that users can overwrite them in their custom code. */ return data .replace(/@mixin ([\w-]*)\s*\((.*)\)\s*{\n(\s+[\w\W]+?)(?=\n})\n}/g, '') .replace(/@mixin ([\w-]*)\s*\((.*)\)\s*{( [^\n]+)}/g, ''); } /* * function to extract all the variables from a given file with its data. * @return an updated data where the icons have been replaced by the actual SVG data. */ async function getVariablesFromFile(file, data) { const regex = /(\$[\w-]*)\s*:\s*(.*);/g; let match = regex.exec(data); while (match) { /* check if variable is a background icon, if so replace it directly by the SVG */ if (match[0].indexOf('../../images/backgrounds') >= 0) { const iconregex = /(\$[\w-]+)\s*:\s*"\.\.\/\.\.\/images\/backgrounds\/([\w./-]+)" !default;/g; const iconmatch = iconregex.exec(match[0]); let svg = (await read(`src/images/backgrounds/${iconmatch[2]}`)).toString(); svg = `"${svg.replace(/\r?\n|\r/g, '%0A') .replace(/"/g, '\'') .replace(/\s/g, '%20') .replace(//g, '%3E') .replace(/%3Csvg/, 'data:image/svg+xml;charset=UTF-8,%3Csvg')}"`; /* add SVG to the coreVar and themeVar only if it is a theme file and make it optional */ if (file.indexOf('theme/') < 0) { coreVar[iconmatch[1]] = {value: `${svg} !default;`, dependencies: []}; } themeVar[iconmatch[1]] = {value: `${svg} !default;`, dependencies: []}; /* add SVG to the variable within the file itself as well */ const inlineSVG = `${iconmatch[1]}: ${svg} !default;`; data = data.replace(match[0], inlineSVG); /* when it is not an SVG add the variable and search for its dependencies */ } else { const variablesRegex = /(\$[\w-]+)/g; let variablesMatch = variablesRegex.exec(match[2]); const dependencies = []; while (variablesMatch) { dependencies.push(variablesMatch[1]); variablesMatch = variablesRegex.exec(match[2]); } /* add variables only to the core Variables if it is not a theme file */ if (file.indexOf('theme/') < 0) { coreVar[match[1]] = {value: `${match[2]};`, dependencies: Array.from(dependencies)}; } themeVar[match[1]] = {value: `${match[2]};`, dependencies: Array.from(dependencies)}; } match = regex.exec(data); } return data; }